MMAjunkie.com (www.mmajunkie.com) learned about the opponent switch from a source close to Stephens overnight.

With the addition of the Stephens-Saraiva bout, the Sept. 22 UFC 76 fight card — which includes a main event between former UFC light heavyweight champion Chuck Liddell and Keith Jardine — now appears complete.

Saraiva, a veteran of the Georgia-based Full Throttle organization, made his UFC debut with a unanimous-decision loss to Dustin Hazelett at UFC 67. The 25-year-old is a Brazilian jiu-jitsu black belt.

Stephens, who recently was granted a temporary leave from the UFC and picked up a win in a smaller Iowa-based organization last month, made a memorable but unsuccessful Octagon debut against Din Thomas at UFC 71. The Iowa-based fighter suffered a second-round armbar submission to “The Ultimate Fighter 4″ veteran.